/* БЛОК: Чат — панель, сообщения, compose */
.chat-panel {
  flex-shrink: 0;
  width: 0;
  height: 100%;
  max-height: 100%;
  min-height: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: var(--yd-bg);
  border-left: none;
  transition: width 0.22s ease;
  align-self: stretch;
}
.chat-panel.open {
  width: min(360px, 100vw);
  border-left: 1px solid var(--yd-border);
}
.chat-head {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--yd-border);
  background: linear-gradient(180deg, #fff 0%, #fafafa 100%);
}
.chat-head-title {
  font-weight: 600;
  font-size: 16px;
}
.chat-head-status {
  font-size: 12px;
  color: var(--yd-text-muted);
  margin-top: 2px;
}
.chat-head-status.online { color: #2e7d32; }
.chat-close-btn {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 8px;
  background: transparent;
  font-size: 22px;
  line-height: 1;
  color: var(--yd-text-muted);
  cursor: pointer;
}
.chat-close-btn:hover {
  background: var(--yd-hover);
  color: var(--yd-text);
}
.chat-author-bar {
  flex-shrink: 0;
  padding: 10px 12px;
  border-bottom: 1px solid var(--yd-border);
  background: var(--yd-page-bg);
}
.chat-author-bar label {
  display: block;
  font-size: 11px;
  color: var(--yd-text-muted);
  margin-bottom: 4px;
}
.chat-author-bar input {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--yd-border);
  border-radius: 8px;
  font: inherit;
  font-size: 14px;
  box-sizing: border-box;
}
.chat-messages {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--yd-page-bg);
  -webkit-overflow-scrolling: touch;
}
.chat-msg {
  max-width: 92%;
  padding: 8px 12px;
  border-radius: 12px;
  background: var(--yd-bg);
  border: 1px solid var(--yd-border);
  align-self: flex-start;
}
.chat-msg.mine {
  align-self: flex-end;
  background: #fff3f0;
  border-color: #ffc9bd;
}
.chat-msg-author {
  font-size: 12px;
  font-weight: 600;
  color: var(--yd-red);
  margin-bottom: 4px;
}
.chat-msg.mine .chat-msg-author {
  color: var(--yd-text);
}
.chat-msg-text {
  font-size: 14px;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
}
.chat-msg-time {
  font-size: 11px;
  color: var(--yd-text-muted);
  margin-top: 6px;
  text-align: right;
}
.chat-empty {
  margin: auto;
  text-align: center;
  color: var(--yd-text-muted);
  font-size: 14px;
  line-height: 1.5;
  padding: 24px 12px;
}
.chat-compose {
  flex-shrink: 0;
  display: flex;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid var(--yd-border);
  background: var(--yd-bg);
}
.chat-compose textarea {
  flex: 1;
  min-height: 40px;
  max-height: 120px;
  padding: 10px 12px;
  border: 1px solid var(--yd-border);
  border-radius: 10px;
  font: inherit;
  font-size: 14px;
  resize: none;
  box-sizing: border-box;
}
.chat-compose textarea:focus {
  outline: none;
  border-color: var(--yd-red);
}
.chat-send-btn {
  align-self: flex-end;
  padding: 10px 16px;
  border: none;
  border-radius: 10px;
  background: var(--yd-red);
  color: #fff;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}
.chat-send-btn:hover { background: var(--yd-red-hover); }
.chat-send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}